751
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Ishida M, Naruta Y, Tani F. A Porphyrin-Related Macrocycle with an Embedded 1,10-Phenanthroline Moiety: Fluorescent Magnesium(II) Ion Sensor. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904859] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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752
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Ishida M, Naruta Y, Tani F. A Porphyrin-Related Macrocycle with an Embedded 1,10-Phenanthroline Moiety: Fluorescent Magnesium(II) Ion Sensor. Angew Chem Int Ed Engl 2009; 49:91-4. [PMID: 19950154 DOI: 10.1002/anie.200904859] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Masatoshi Ishida
- Institute for Materials Chemistry and Engineering, Kyushu University, Higashi-ku, Fukuoka, 812-8581, Japan
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753
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Wang D, Miyamoto R, Shiraishi Y, Hirai T. BODIPY-conjugated thermoresponsive copolymer as a fluorescent thermometer based on polymer microviscosity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13176-13182. [PMID: 19821567 DOI: 10.1021/la901860x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A simple copolymer, poly(NIPAM-co-BODIPY), consisting of N-isopropylacrylamide (NIPAM) and boradiazaindacene (BODIPY) units, behaves as a fluorescent thermometer in water. The copolymer exhibits weak fluorescence at <23 degrees C, but the intensity increases with a rise in temperature up to 35 degrees C, enabling an accurate indication of the solution temperature at 23-35 degrees C. The heat-induced fluorescence enhancement is driven by an increase in the polymer microviscosity, associated with a phase transition of the polymer from the coil to globule state. The viscous domain formed inside the globule-state polymer suppresses the rotation of the meso-pyridinium group of the excited-state BODIPY units, resulting in heat-induced fluorescence enhancement. The polymer shows reversible fluorescence enhancement/quenching regardless of the heating/cooling process and displays high reusability with a simple recovery process.
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Affiliation(s)
- Dongping Wang
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
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754
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Que EL, Gianolio E, Baker SL, Aime S, Chang CJ. A copper-activated magnetic resonance imaging contrast agent with improved turn-on relaxivity response and anion compatibility. Dalton Trans 2009:469-76. [PMID: 20023983 DOI: 10.1039/b916931h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the synthesis and characterization of Copper-Gad-7 (CG7), a new copper-activated magnetic resonance imaging (MRI) contrast agent that possesses a Gd(3+)-DO3A scaffold with an appended thioether-rich receptor for copper recognition. Installation of additional carboxylate groups on the periphery of the CG scaffold affords a practical strategy to increase the absolute relaxivity of these types of copper-responsive MRI sensors as well as reduce their sensitivity to biologically abundant anions. Due in large part to restricted access of inner-sphere water molecules to the paramagnetic Gd(3+) core, in the absence of copper ions, CG7 exhibits a relatively low relaxivity value of r(1) = 2.6 mM(-1) s(-1); addition of Cu(+) triggers a 340% enhancement in relaxivity to r(1) = 11.4 mM(-1) s(-1). For comparison, the relaxivity of the analogous CG2 sensor without peripheral carboxylates increases from r(1) = 1.5 to 6.9 mM(-1) s(-1) upon Cu(+) binding. CG7 features high selectivity for Cu(+) over a range of biologically relevant metal ions, including the cellular abundant alkali and alkaline earth cations and d-block ions Zn(2+) and Cu(2+). Moreover, the Cu(+)-response of the CG7 sensor is not significantly affected by bicarbonate, phosphate, citrate, and lactate anions at cellular levels. (17)O NMR dysprosium-induced shift (DIS) and nuclear magnetic relaxation dispersion (NMRD) experiments suggest that the origin of the improved anion compatibility of CG7 is a reduced q modulation compared to previous members of the CG family, and T(1)-weighted phantom images confirm that CG7 can monitor changes in copper levels by MRI at clinically relevant field strengths.
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Affiliation(s)
- Emily L Que
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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755
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Grazul M, Budzisz E. Biological activity of metal ions complexes of chromones, coumarins and flavones. Coord Chem Rev 2009. [DOI: 10.1016/j.ccr.2009.06.015] [Citation(s) in RCA: 180] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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756
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Abstract
Metal-responsive fluorescent indicators are powerful tools for visualizing trace metals with subcellular resolution. By taking advantage of the diverse photophysical properties of organic fluorophores, metal ion-selective fluorescent indicators have been rationally designed and tailored towards cellular applications. This review summarizes challenges associated with the probe design and describes recent efforts in our research group in developing selective and sensitive reagents for the detection of zinc and copper in mammalian cells.
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Affiliation(s)
- Christoph J. Fahrni
- Correspondence: Prof. Dr. C.J. Fahrni, Georgia Institute of Technology, School of Chemistry and Biochemistry, and Petit Institute for Bioengineering and Bioscience, 901 Atlantic Drive, Atlanta, GA 30332-0400, Tel.: +1 404 385-1164, Fax: + 1 404 894-2295,
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757
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Hurst TK, Wang D, Thompson RB, Fierke CA. Carbonic anhydrase II-based metal ion sensing: Advances and new perspectives. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2009; 1804:393-403. [PMID: 19818877 DOI: 10.1016/j.bbapap.2009.09.031] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 09/25/2009] [Accepted: 09/27/2009] [Indexed: 12/31/2022]
Abstract
Carbonic anhydrases are archetypical zinc metalloenzymes and as such, they have been developed as the recognition element of a family of fluorescent indicators (sensors) to detect metal ions, particularly Zn(2+) and Cu(2+). Subtle modification of the structure of human carbonic anhydrase II isozyme (CAII) alters the selectivity, sensitivity, and response time for these sensors. Sensors using CAII variants coupled with zinc-dependent fluorescent ligands demonstrate picomolar sensitivity, unmatched selectivity, ratiometric fluorescence signal, and near diffusion-controlled response times. Recently, these sensors have been applied to measuring the readily exchangeable concentrations of zinc in the cytosol and nucleus of mammalian tissue culture cells and concentrations of free Cu(2+) in seawater.
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Affiliation(s)
- Tamiika K Hurst
- Department of Chemistry, The University of Michigan, Ann Arbor, MI 48109, USA
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758
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Que EL, Chang CJ. Responsive magnetic resonance imaging contrast agents as chemical sensors for metals in biology and medicine. Chem Soc Rev 2009; 39:51-60. [PMID: 20023836 DOI: 10.1039/b914348n] [Citation(s) in RCA: 226] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This tutorial review highlights progress in the development of responsive magnetic resonance imaging (MRI) contrast agents for detecting and sensing biologically relevant metal ions. Molecular imaging with bioactivatable MRI indicators offers a potentially powerful methodology for studying the physiology and pathology of metals by capturing dynamic three-dimensional images of living systems for research and clinical applications. This emerging area at the interface of inorganic chemistry and the life sciences offers a broad palette of opportunities for researchers with interests ranging from coordination chemistry and spectroscopy to supramolecular chemistry and molecular recognition to metals in biology and medicine.
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Affiliation(s)
- Emily L Que
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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759
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de Silva AP, Moody TS, Wright GD. Fluorescent PET (photoinduced electron transfer) sensors as potent analytical tools. Analyst 2009; 134:2385-93. [PMID: 19918605 DOI: 10.1039/b912527m] [Citation(s) in RCA: 384] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Fluorescent sensors are an important part of the analytical scientist's toolbox. The use of fluorescent PET (Photoinduced Electron Transfer) sensors has seen particular growth in recent times. This Critical Review discusses recent growth areas in fluorescent PET sensors by emphasizing the modular features of the 'fluorophore-spacer-receptor' design. The occurrence of the dipicolylamine receptor in PET sensor designs is critically examined as a case in point.
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Affiliation(s)
- A Prasanna de Silva
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, Northern Ireland BT9 5AG, Northern Ireland.
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760
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Haas KL, Franz KJ. Application of metal coordination chemistry to explore and manipulate cell biology. Chem Rev 2009; 109:4921-60. [PMID: 19715312 PMCID: PMC2761982 DOI: 10.1021/cr900134a] [Citation(s) in RCA: 601] [Impact Index Per Article: 40.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kathryn L Haas
- Department of Chemistry, Duke University, 124 Science Drive, Durham, North Carolina 27708-0346, USA
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761
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Affiliation(s)
- Reagan McRae
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
| | - Pritha Bagchi
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
| | - S. Sumalekshmy
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
| | - Christoph J. Fahrni
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
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762
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Berezin MY, Guo K, Teng B, Edwards WB, Anderson CJ, Vasalatiy O, Gandjbakhche A, Griffiths GL, Achilefu S. Radioactivity-synchronized fluorescence enhancement using a radionuclide fluorescence-quenched dye. J Am Chem Soc 2009; 131:9198-200. [PMID: 19514722 DOI: 10.1021/ja903685b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrate the first evidence of radioactivity-synchronized fluorescence quenching of a near-infrared light-emitting dye by a radionuclide, (64)Cu, and subsequent fluorescence enhancement upon (64)Cu decay to the daughter isotopes (64)Ni and (64)Zn. The dynamic switch from high radioactivity and low fluorescence to low radioactivity and high fluorescence is potentially useful for developing complementary multimodal imaging and detection platforms for chemical, environmental, and biomedical applications as well as for unraveling the mechanisms of metal-induced dynamic fluorescence changes.
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Affiliation(s)
- Mikhail Y Berezin
- Department of Radiology, Washington University School of Medicine, 4525 Scott Avenue, St. Louis, Missouri 63110, USA
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763
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Zeng L, Wang P, Zhang H, Zhuang X, Dai Q, Liu W. Highly Selective and Sensitive Heparin Probing from Supramolecular Assembly of Pyrene Derivatives. Org Lett 2009; 11:4294-7. [DOI: 10.1021/ol901392p] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lintao Zeng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Pengfei Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hongyan Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiaoqing Zhuang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Qing Dai
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Weimin Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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764
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Mancin F, Scrimin P, Tecilla P, Tonellato U. Amphiphilic metalloaggregates: Catalysis, transport, and sensing. Coord Chem Rev 2009. [DOI: 10.1016/j.ccr.2009.03.015] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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765
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Genetically encoded FRET sensors to monitor intracellular Zn2+ homeostasis. Nat Methods 2009; 6:737-40. [PMID: 19718032 DOI: 10.1038/nmeth.1368] [Citation(s) in RCA: 339] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Accepted: 07/20/2009] [Indexed: 12/18/2022]
Abstract
We developed genetically encoded fluorescence resonance energy transfer (FRET)-based sensors that display a large ratiometric change upon Zn(2+) binding, have affinities that span the pico- to nanomolar range and can readily be targeted to subcellular organelles. Using this sensor toolbox we found that cytosolic Zn(2+) was buffered at 0.4 nM in pancreatic beta cells, and we found substantially higher Zn(2+) concentrations in insulin-containing secretory vesicles.
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766
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Bazzicalupi C, Bencini A, Biagini S, Bianchi A, Faggi E, Giorgi C, Marchetta M, Totti F, Valtancoli B. Polyamine Receptors Containing Dipyridine or Phenanthroline Units: Clues for the Design of Fluorescent Chemosensors for Metal Ions. Chemistry 2009; 15:8049-8063. [DOI: 10.1002/chem.200900283] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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767
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Que EL, Gianolio E, Baker SL, Wong AP, Aime S, Chang CJ. Copper-responsive magnetic resonance imaging contrast agents. J Am Chem Soc 2009; 131:8527-36. [PMID: 19489557 DOI: 10.1021/ja900884j] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The design, synthesis, and evaluation of the Copper-Gad (CG) family, a new class of copper-activated magnetic resonance imaging (MRI) contrast agents, are presented. These indicators comprise a Gd(3+)-DO3A core coupled to various thioether-rich receptors for copper-induced relaxivity switching. In the absence of copper ions, inner-sphere water binding to the Gd(3+) chelate is restricted, resulting in low longitudinal relaxivity values (r(1) = 1.2-2.2 mM(-1) s(-1) measured at 60 MHz). Addition of Cu(+) to CG2, CG3, CG4, and CG5 and either Cu(+) or Cu(2+) to CG6 triggers marked enhancements in relaxivity (r(1) = 2.3-6.9 mM(-1) s(-1)). CG2 and CG3 exhibit the greatest turn-on responses, going from r(1) = 1.5 mM(-1) s(-1) in the absence of Cu(+) to r(1) = 6.9 mM(-1) s(-1) upon Cu(+) binding (a 360% increase). The CG sensors are highly selective for Cu(+) and/or Cu(2+) over competing metal ions at cellular concentrations, including Zn(2+) at 10-fold higher concentrations. (17)O NMR dysprosium-induced shift and nuclear magnetic relaxation dispersion measurements support a mechanism in which copper-induced changes in the coordination environment of the Gd(3+) core result in increases in q and r(1). T(1)-weighted phantom images establish that the CG sensors are capable of visualizing changes in copper levels by MRI at clinical field strengths.
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Affiliation(s)
- Emily L Que
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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768
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Lee DN, Kim GJ, Kim HJ. A Fluorescent coumarinylalkyne probe for the selective detection of mercury(II) ion in water. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.06.017] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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769
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Montgomery CP, Murray BS, New EJ, Pal R, Parker D. Cell-penetrating metal complex optical probes: targeted and responsive systems based on lanthanide luminescence. Acc Chem Res 2009; 42:925-37. [PMID: 19191558 DOI: 10.1021/ar800174z] [Citation(s) in RCA: 557] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To understand better the structure and function of biological systems, cell biologists and biochemists would like to have methods that minimally perturb living systems. The development of emissive optical probes is essential for improving our observation of intracellular signaling and recognition processes. Following excitation of the probe, photons emitted from the probe may be observed by spectroscopy or microscopy and encode information about their environments in their energy, lifetime, and polarization. Such optical probes may be based on organic fluorophores, quantum dots, recombinant proteins, or emissive metal complexes. In this Account, we trace the emergence of lanthanide coordination complexes as emissive optical probes. These probes benefit from sharp emission bands and long lifetimes. We can design these complexes to report on the concentration of key biochemical variables by modulation of spectral form, lifetime, or circular polarization. These properties allow us to apply ratiometric methods of analysis in spectroscopy or microscopy to report on local pH, pM (M = Ca, Zn), or the concentration of certain anionic metabolites, such as citrate, lactate, bicarbonate, or urate. For optical microscopy studies in living cells, these probes must be cell-permeable and, ideally, should localize in a given cell organelle. We undertook systematic studies of more than 60 emissive complexes, examining the time dependence of cellular uptake and compartmentalization, cellular toxicity, protein affinity, and quenching sensitivity. These results and their relationship to probe structure have allowed us to identify certain structure-activity relationships. The nature and linkage mode of the integral sensitizing group-introduced to harvest incident light efficiently-is of primary importance in determining protein affinity and cellular uptake and trafficking. In many cases, uptake may occur via macropinocytosis. We have defined three main classes of behavior: complexes exhibit predominant localization profiles in protein-rich regions (nucleoli/ribosomes), in cellular mitochondria, or in endosomes/lysosomes. Therefore, these systems offer considerable promise as intracellular optical probes, amenable to single- or two-photon excitation, that may report on the local ionic composition of living cells subjected to differing environmental stresses.
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Affiliation(s)
| | - Benjamin S. Murray
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Elizabeth J. New
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Robert Pal
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - David Parker
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
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770
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Tang L, Jin JK, Qin A, Zhang Yuan W, Mao Y, Mei J, Zhi Sun J, Zhong Tang B. A fluorescent thermometer operating in aggregation-induced emission mechanism: probing thermal transitions of PNIPAM in water. Chem Commun (Camb) 2009:4974-6. [PMID: 19668820 DOI: 10.1039/b907382e] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly(N-isopropylacrylamide) was labelled using a fluorogen with an aggregation-induced emission feature by direct polymerization; the label served as a fluorogenic probe that reveals fine details in the thermal transitions in the aqueous solution of the polymer; the working mode was readily tuned between non-monotonic and monotonic by changing the labelling degree of the polymer.
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Affiliation(s)
- Li Tang
- Institute of Biomedical Macromolecules, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou, China
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771
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Pu KY, Cai L, Liu B. Design and Synthesis of Charge-Transfer-Based Conjugated Polyelectrolytes as Multicolor Light-Up Probes. Macromolecules 2009. [DOI: 10.1021/ma9010389] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kan-Yi Pu
- Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore, Singapore 117576
| | - Liping Cai
- Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore, Singapore 117576
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, 4 Engineering Drive 4, National University of Singapore, Singapore 117576
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772
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Xue L, Liu Q, Jiang H. Ratiometric Zn2+ Fluorescent Sensor and New Approach for Sensing Cd2+ by Ratiometric Displacement. Org Lett 2009; 11:3454-7. [DOI: 10.1021/ol901380w] [Citation(s) in RCA: 265] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Lin Xue
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China, and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Qing Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China, and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
| | - Hua Jiang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China, and Graduate School of Chinese Academy of Sciences, Beijing, P. R. China
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773
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Lee JS, Kang NY, Kim YK, Samanta A, Feng S, Kim HK, Vendrell M, Park JH, Chang YT. Synthesis of a BODIPY Library and Its Application to the Development of Live Cell Glucagon Imaging Probe. J Am Chem Soc 2009; 131:10077-82. [DOI: 10.1021/ja9011657] [Citation(s) in RCA: 184] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun-Seok Lee
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Nam-young Kang
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Yun Kyung Kim
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Animesh Samanta
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Suihan Feng
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Hyeong Kyu Kim
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Marc Vendrell
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Jung Hwan Park
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
| | - Young-Tae Chang
- Department of Chemistry, New York University, New York, New York 10003, Department of Chemistry, MedChem Program of Life Sciences Institute, National University of Singapore, Singapore 117543, Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (ASTAR), Biopolis, Singapore 138667
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774
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Unciti-Broceta A, Rahimi Yusop M, Richardson PR, Walton JG, Bradley M. A fluorescein-derived anthocyanidin-inspired pH sensor. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.223] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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775
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Wong BA, Friedle S, Lippard SJ. Solution and fluorescence properties of symmetric dipicolylamine-containing dichlorofluorescein-based Zn2+ sensors. J Am Chem Soc 2009; 131:7142-52. [PMID: 19405465 DOI: 10.1021/ja900980u] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism by which dipicolylamine (DPA) chelate-appended fluorophores respond to zinc was investigated by the synthesis and study of five new analogues of the 2',7'-dichlorofluorescein-based Zn(2+) sensor Zinpyr-1 (ZP1). With the use of absorption and emission spectroscopy in combination with potentiometric titrations, a detailed molecular picture has emerged of the Zn(2+) and H(+) binding properties of the ZP1 family of sensors. The two separate N(3)O donor atom sets on ZP1 converge to form binding pockets in which all four heteroatoms participate in coordination to either Zn(2+) or protons. The position of the pyridyl group nitrogen atom, 2-pyridyl or 4-pyridyl, has a large impact on the fluorescence response of the dyes to protons despite relatively small changes in pK(a) values. The fluorescence quenching effects of such multifunctional electron-donating units are often taken as a whole. Despite the structural complexity of ZP1, however, we provide evidence that the pyridyl arms of the DPA appendages participate in the quenching process, in addition to the contribution from the tertiary nitrogen amine atom. Potentiometric titrations reveal ZP1 dissociation constants (K(d)) for Zn(2+) of 0.04 pM and 1.2 nM for binding to the first and second binding pockets of the ligand, respectively, the second of which correlates with the value observed by fluorescence titration. This result demonstrates that both binding pockets of this symmetric, ditopic sensor need to be occupied in order for full fluorescence turn-on to be achieved. These results have significant implications for the design and implementation of fluorescent sensors for studies of mobile zinc ions in biology.
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Affiliation(s)
- Brian A Wong
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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776
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Babourina O, Rengel Z. Uptake of aluminium into Arabidopsis root cells measured by fluorescent lifetime imaging. ANNALS OF BOTANY 2009; 104:189-95. [PMID: 19401291 PMCID: PMC2706735 DOI: 10.1093/aob/mcp098] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2009] [Revised: 02/17/2009] [Accepted: 03/23/2009] [Indexed: 05/21/2023]
Abstract
BACKGROUND AND AIMS Measuring the Al(3+) uptake rate across the plasma membrane of intact root cells is crucial for understanding the mechanisms and time-course of Al toxicity in plants. However, a reliable method with the sufficient spatial and temporal resolution to estimate Al(3+) uptake in intact root cells does not exist. METHODS In the current study, fluorescent lifetime imaging (FLIM) analysis was used to quantify Al(3+) uptake in the root-cell cytoplasm in vivo. This was performed via the estimation of the fluorescence lifetime of Al-lumogallion {5-chloro-3[(2,4-dihydroxyphenyl)azo]-2-hydroxybenzenesulfonic acid} complexes and measurements of intracellular pH while exposing arabidopsis seedlings to acidic and Al(3+) stresses. KEY RESULTS The lifetime of Al-lumogallion complexes fluorescence is pH-dependent. The primary sites for Al(3+) entry are the meristem and distal elongation zones, while Al(3+) uptake via the cortex and epidermis of the mature root zone is limited. The maximum rates of Al uptake into the cytoplasm (2-3 micromol m(-3) min(-1) for the meristematic root zone and 3-7 micromol m(-3) min(-1) for the mature zone) were observed after a 30-min exposure to 100 microM AlCl(3) (pH 4.2). Intracellular Al concentration increased to 0.4 microM Al within the first 3 h of exposure to 100 microM AlCl(3). CONCLUSIONS FLIM analysis of the fluorescence of Al-lumogallion complexes can be used to reliably quantify Al uptake in the cytoplasm of intact root cells at the initial stages of Al(3+) stress.
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Affiliation(s)
- Olga Babourina
- School of Earth and Geographical Sciences M087, University of Western Australia, Crawley, WA, Australia.
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777
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Marbella L, Serli-Mitasev B, Basu P. Development of a fluorescent Pb2+ sensor. Angew Chem Int Ed Engl 2009; 48:3996-8. [PMID: 19408267 DOI: 10.1002/anie.200806297] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A real turn-on: The emission intensity of heterocycle 1 increases upon binding to Pb(2+). Thus, 1 acts as a small-molecule "turn-on" fluorescent sensor for lead. The sensor is highly selective and is functional over a wide range of pH values.
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Affiliation(s)
- Lauren Marbella
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282, USA
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778
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Nagraj N, Liu J, Sterling S, Wu J, Lu Y. DNAzyme catalytic beacon sensors that resist temperature-dependent variations. Chem Commun (Camb) 2009:4103-5. [PMID: 19568647 DOI: 10.1039/b903059j] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The temperature-dependent variability of a Pb2+-specific 8-17E DNAzyme catalytic beacon sensor has been addressed through the introduction of mismatches in the DNAzyme, and the resulting sensors resist temperature-dependent variations from 4 to 30 degrees C.
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Affiliation(s)
- Nandini Nagraj
- Department of Chemistry, University of Illinois at Urbana, Champaign Urbana, IL 61801, USA
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779
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Pathak RK, Ibrahim S, Rao CP. Selective recognition of Zn2+ by salicylaldimine appended triazole-linked di-derivatives of calix[4]arene by enhanced fluorescence emission in aqueous-organic solutions: role of terminal –CH2OH moietieefs in conjunction with the imine in recognition. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.126] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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780
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Fluorescence turn-on chemosensor for Hg2+ based on a rhodamine derivative and its application in bioimaging. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11426-009-0126-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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781
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He X, Zhu N, Yam VWW. Synthesis, Characterization, Structure, and Selective Cu2+ Sensing Studies of an Alkynylgold(I) Complex Containing the Dipicolylamine Receptor. Organometallics 2009. [DOI: 10.1021/om900148g] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoming He
- Centre for Carbon-Rich Molecular and Nano-Scale Metal-Based Materials Research, Department of Chemistry, and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
| | - Nianyong Zhu
- Centre for Carbon-Rich Molecular and Nano-Scale Metal-Based Materials Research, Department of Chemistry, and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
| | - Vivian Wing-Wah Yam
- Centre for Carbon-Rich Molecular and Nano-Scale Metal-Based Materials Research, Department of Chemistry, and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
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782
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783
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Palmer CM, Guerinot ML. Facing the challenges of Cu, Fe and Zn homeostasis in plants. Nat Chem Biol 2009; 5:333-40. [PMID: 19377460 DOI: 10.1038/nchembio.166] [Citation(s) in RCA: 291] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Plants have recently moved into the spotlight owing to the growing realization that the world needs solutions to energy and food production that are sustainable and environmentally sound. Iron, copper and zinc are essential for plant growth and development, yet the same properties that make these transition metals indispensable can also make them deadly in excess. Iron and copper are most often used for their redox properties, whereas zinc is primarily used for its ability to act as a Lewis acid. Here we review recent advances in the field of metal homeostasis and integrate the findings on uptake and transport of these three metals.
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Affiliation(s)
- Christine M Palmer
- Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, USA
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784
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Garner AL, Song F, Koide K. Enhancement of a Catalysis-Based Fluorometric Detection Method for Palladium through Rational Fine-Tuning of the Palladium Species. J Am Chem Soc 2009; 131:5163-71. [DOI: 10.1021/ja808385a] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amanda L. Garner
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
| | - Fengling Song
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
| | - Kazunori Koide
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
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785
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786
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Li J, Zhang T, Ge J, Yin Y, Zhong W. Fluorescence Signal Amplification by Cation Exchange in Ionic Nanocrystals. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805710] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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787
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Tamanini E, Katewa A, Sedger LM, Todd MH, Watkinson M. A synthetically simple, click-generated cyclam-based zinc(II) sensor. Inorg Chem 2009; 48:319-24. [PMID: 19053845 DOI: 10.1021/ic8017634] [Citation(s) in RCA: 142] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A cyclam-based macrocyclic sensor has been prepared using synthetically simple "click" chemistry to link a fluorophore to the macrocyclic receptor. This sensor shows high selectivity for Zn(II) over a range of other metals, providing a significant enhancement of fluorescence intensity over a wide pH range. As such, this is the first cyclam-based sensor demonstrated to be selective for Zn(II) and is the first example of a triazole being used as a coordinating ligand on an azamacrocycle. The sensor can access biologically available zinc in mammalian cells, sensing the Zn(II) flux that exists during apoptotic cell death.
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Affiliation(s)
- Emiliano Tamanini
- The Walter Besant Building, School of Biological and Chemical Sciences, Queen Mary, University of London, Mile End Road, London, E1 4NS, United Kingdom
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788
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Shete VS, Benson DE. Protein design provides lead(II) ion biosensors for imaging molecular fluxes around red blood cells. Biochemistry 2009; 48:462-70. [PMID: 19099413 DOI: 10.1021/bi801777h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metalloprotein design and semiconductor nanoparticles have been combined to generate a reagent for selective fluorescence imaging of Pb(2+) ions in the presence red blood cells. A biosensor system based on semiconductor nanoparticles provides the photonic properties for small molecule measurement in and around red blood cells. Metalloprotein design was used to generate a Pb(2+) ion selective receptor from a protein that is structurally homologous to a protein used previously in this biosensing system. Parameters for the Pb(2+) ion binding site were derived from crystallographic structures of low molecular weight Pb(2+) ion complexes that contain a stereoactive lone pair. When the designed protein was produced and attached to ZnS-coated CdSe nanoparticles, two Pb(NO(3))(2)-associated binding events were observed (2-fold emission decrease; K(A1) = 1 x 10(9) M(-1); K(A2) = 3.5 x 10(6) M(-1)). The fluorescence response had a 100 pM Pb(NO(3))(2) detection limit, while no response was observed with Ca(2+) ions (10 mM), Zn(2+) ions (100 muM), or Cd(2+) ions (100 muM). Metal ion selectivity presumably comes from the coordination geometry selected to favor lone pair formation on Pb(2+) ions and electrostatically disfavor tetrahedral coordination. Replacement of ZnS-coated CdSe with ZnS-coated InGaP nanoparticles provided similar biosensors (100 pM limit of detection; K(A1) = 1 x 10(9) M(-1); K(A2) = 1 x 10(7) M(-1)) but with excitation/emission wavelengths longer than the major absorbance of red blood cell hemoglobin (>620 nm). The InGaP nanoparticle-based biosensors provided a 5 nM Pb(NO(3))(2) detection limit in the presence of red blood cells. The modularity of the biosensor system provides exchangeable Pb(2+) ion detection around red blood cells.
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Affiliation(s)
- Vivekanand S Shete
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA
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789
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Huang J, Xu Y, Qian X. A Rhodamine-Based Hg2+ Sensor with High Selectivity and Sensitivity in Aqueous Solution: A NS2-Containing Receptor. J Org Chem 2009; 74:2167-70. [DOI: 10.1021/jo802297x] [Citation(s) in RCA: 271] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Junhai Huang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Yufang Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
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790
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Li J, Zhang T, Ge J, Yin Y, Zhong W. Fluorescence Signal Amplification by Cation Exchange in Ionic Nanocrystals. Angew Chem Int Ed Engl 2009; 48:1588-91. [DOI: 10.1002/anie.200805710] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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791
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Qian F, Zhang C, Zhang Y, He W, Gao X, Hu P, Guo Z. Visible Light Excitable Zn2+ Fluorescent Sensor Derived from an Intramolecular Charge Transfer Fluorophore and Its in Vitro and in Vivo Application. J Am Chem Soc 2009; 131:1460-8. [DOI: 10.1021/ja806489y] [Citation(s) in RCA: 378] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fang Qian
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, Animal Model Research Center, Nanjing University, Nanjing 210061, P. R. China, and Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, P. R. China
| | - Changli Zhang
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, Animal Model Research Center, Nanjing University, Nanjing 210061, P. R. China, and Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, P. R. China
| | - Yumin Zhang
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, Animal Model Research Center, Nanjing University, Nanjing 210061, P. R. China, and Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, P. R. China
| | - Weijiang He
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, Animal Model Research Center, Nanjing University, Nanjing 210061, P. R. China, and Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, P. R. China
| | - Xiang Gao
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, Animal Model Research Center, Nanjing University, Nanjing 210061, P. R. China, and Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, P. R. China
| | - Ping Hu
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, Animal Model Research Center, Nanjing University, Nanjing 210061, P. R. China, and Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, P. R. China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China, Animal Model Research Center, Nanjing University, Nanjing 210061, P. R. China, and Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, P. R. China
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792
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Sakamoto T, Ojida A, Hamachi I. Molecular recognition, fluorescence sensing, and biological assay of phosphate anion derivatives using artificial Zn(ii)–Dpa complexes. Chem Commun (Camb) 2009:141-52. [DOI: 10.1039/b812374h] [Citation(s) in RCA: 225] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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793
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Xue L, Liu C, Jiang H. A ratiometric fluorescent sensor with a large Stokes shift for imaging zinc ions in living cells. Chem Commun (Camb) 2009:1061-3. [DOI: 10.1039/b814501f] [Citation(s) in RCA: 162] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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794
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Li SH, Chen FR, Zhou YF, Wang JN, Zhang H, Xu JG. Enhanced fluorescence sensing of hydroxylated organotins by a boronic acid-linked Schiff base. Chem Commun (Camb) 2009:4179-81. [DOI: 10.1039/b906467b] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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795
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Singhal NK, Mitra A, Rajsekhar G, Shaikh MM, Kumar S, Guionneau P, Rao CP. Role of the orientation of –OH groups in the sensitivity and selectivity of the interaction of M2+ with ribosyl- and galactosyl-imino-conjugates. Dalton Trans 2009:8432-42. [DOI: 10.1039/b903668g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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796
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797
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Lu H, Xiong L, Liu H, Yu M, Shen Z, Li F, You X. A highly selective and sensitive fluorescent turn-on sensor for Hg2+ and its application in live cell imaging. Org Biomol Chem 2009; 7:2554-8. [DOI: 10.1039/b902912e] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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798
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Hong Y, Lam JWY, Tang BZ. Aggregation-induced emission: phenomenon, mechanism and applications. Chem Commun (Camb) 2009:4332-53. [DOI: 10.1039/b904665h] [Citation(s) in RCA: 3109] [Impact Index Per Article: 207.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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799
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Yang YK, Ko SK, Shin I, Tae J. Fluorescent detection of methylmercury by desulfurization reaction of rhodamine hydrazide derivatives. Org Biomol Chem 2009; 7:4590-3. [DOI: 10.1039/b915723a] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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800
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Lim NC, Pavlova SV, Brückner C. Squaramide Hydroxamate-Based Chemidosimeter Responding to Iron(III) with a Fluorescence Intensity Increase. Inorg Chem 2008; 48:1173-82. [DOI: 10.1021/ic801322x] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nathaniel C. Lim
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
| | - Svetlana V. Pavlova
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
| | - Christian Brückner
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
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